A trash can, also known as a waste bin or a garbage bin, refers to a place where garbage is placed. Most of them are made of metal or plastic. When they are used, they are put into plastic bags. When there is more garbage, they can be tied up and thrown away. The trash can is a container for people to hide dirt and dirt in life. It is also a reflection of social culture. Most trash cans are covered to prevent the smell of garbage. Some trash cans can be opened with pedals. Placed in the kitchen for food, some families will have one in each main room, and some of the playground trash can be specially designed as cute characters. According to the occasion (1) public type has special requirements for the environment: it can withstand high and low temperature under natural outdoor conditions, and has sufficient mechanical strength and good impact toughness. Easy to clean and integrate with the environment. (2) The family style is mainly used in the bathroom and kitchen. The kitchen and the bathroom are best to use the closed trash can with the cover. Even if you use the open trash can with the inner plastic bag, you must tighten the bag at the same time. And the garbage is best to fall down every day, especially the garbage and toilet garbage, can not stay in the trash can not fall overnight. This can prevent the emission of mold and odor. (3) Medical type is used to store various solid tangibles and liquids discarded after clinical use. In the clinical laboratory, patients’ blood, body fluids and secretions are mainly used, and a small amount of recyclable articles are used.